Assessment of the Seismic Vulnerability of an Unreinforced Masonry Structure Based on Discrete-Macro Dynamic Analyses

Chácara, César; Lourenço, Paulo B.; Cannizzaro, Francesco; Pantò, Bartolomeo; Caliò, Ivo

doi:10.1007/978-3-319-99441-3_130

Cited by 5 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The authors constructed a three-dimensional capacity dominium, plotting 12 pushover curves in the function of the considered seismic incident angles. The same procedure was applied by Chácara et al [49,50].…”

Section: Nonlinear Static Analysismentioning

confidence: 97%

Historical Evolution of the Impact of Seismic Incident Angles on the Safety Assessment of Various Building Construction Typologies

Cantagallo,

Terrenzi,

Camata

et al. 2024

Buildings

View full text Add to dashboard Cite

In the existing building stock, typically characterised by a high degree of irregularity, the effects of earthquakes are strongly dependent on the epicentre–structure direction and the angle of incidence of the seismic motion. However, the scientific community has not yet reached a unanimous consensus on the evaluation of the effects of seismic incidence angles. Therefore, this paper conducts an extensive investigation of the international literature on current methods to consider seismic directionality, systematically reviewing more than 80 publications on this topic. Following a brief overview of the problem and an analysis of the initial developments of the multidirectionality concept of seismic input, a state-of-the-art review is presented based on the considered analysis methods, specifically response spectrum analysis, nonlinear static analysis, and nonlinear response history analysis. Moreover, the adoption of multidirectional seismic input in popular codes and standards is presented and discussed. This study provides the first comprehensive synthesis of research on the seismic incidence angles across diverse building typologies, offering crucial insights for future code revisions and highlighting significant gaps in current analytical methods and standards, thereby setting a new direction for subsequent empirical investigations. Specifically, the extensive state-of-the-art review revealed that, until now, the evaluation of the angle of incidence was primarily conducted on existing reinforced concrete buildings with a limited number of storeys, analysed with nonlinear response history analysis. This underscores the need for future research to extensively investigate the impact of the angle of incidence on other types of construction typologies.

show abstract

Section: Nonlinear Static Analysismentioning

confidence: 97%

Historical Evolution of the Impact of Seismic Incident Angles on the Safety Assessment of Various Building Construction Typologies

Cantagallo,

Terrenzi,

Camata

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

“…Two researches [42,43] have recently addressed the topic of multi directional pushover-based seismic assessment applied to masonry buildings. Both investigations have considered a discrete macro-element modeling technique for the analysis of an historical palace damaged by L'Aquila earthquake, and a brick masonry structure prototype tested in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

Multi directional pushover analysis of irregular masonry buildings without box behavior

Kalkbrenner

Pelà

Sandoval

2019

Engineering Structures

View full text Add to dashboard Cite

“…An alternative method to the limit analysis for assessing the seismic performance of HMS is represented by non-liner incremental, static or dynamic, analyses. Within this framework, a parsimonious discrete modelling approach, the Discrete Macro-Element Method (DMEM), has been successfully applied to analyse masonry structures subjected to lateral loads by means of static, push-over-analyses [17] [18] or non-linear dynamic analyses [19]- [22] [20].…”

Section: Introductionmentioning

confidence: 99%

A New 3d-Adaptive Discrete Interface for Modeling the Torsion Behavior of Masonry Contact Joints

Casapulla¹,

Pantò²,

Caliò³

2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

Self Cite

View full text Add to dashboard Cite

The numerical modelling of the torsion behaviour of masonry block joints represents a key aspect for the assessment of the out-of-plane response of masonry walls. However, it represents a challenging computational issue due to the high non-linear coupling between the torsion and other internal forces (shear, bending moment and axial load), meaning the necessity to use complex 3D non-linear constitutive laws. The limit analysis-based approaches represent efficient and reliable numerical tools to predict the ultimate torsion load including the interaction with shear and bending moment. Within this framework, few researchers have proposed and experimentally validated continuous and discrete contact models, able to predict the ultimate strength of masonry contact joints. These models are successfully employed to develop highdetailed simulations of 3D dry-jointed masonry block structures subjected to lateral in-plane and out-of-plane actions. Nonetheless, the limit analysis is not able to characterize the nonlinear response of masonry walls prior to collapse and to predict the evolution of plastic damage and the ductility resources, if available. Aiming at overcoming such a limit, this paper introduces a new 3D adaptive discrete interface, able to simulate the non-linear torsion-shear behaviour of masonry joints. The interface consists of four springs whose orientation is updated during the analysis, following an incremental iterative Newton-Raphson algorithm taking into account the current position of the torsion centre of the interface. The ultimate torsion-shear capacity domain obtained by the proposed model is compared with limit-analysis predictions and experimental data available in the literature. The results highlight the ability of the new interface to effectively reproduce the non-linear behaviour and the ultimate strength of joints subjected to different loading combinations.

show abstract

Assessment of the Seismic Vulnerability of an Unreinforced Masonry Structure Based on Discrete-Macro Dynamic Analyses

Cited by 5 publications

References 11 publications

Historical Evolution of the Impact of Seismic Incident Angles on the Safety Assessment of Various Building Construction Typologies

Historical Evolution of the Impact of Seismic Incident Angles on the Safety Assessment of Various Building Construction Typologies

Multi directional pushover analysis of irregular masonry buildings without box behavior

A New 3d-Adaptive Discrete Interface for Modeling the Torsion Behavior of Masonry Contact Joints

Contact Info

Product

Resources

About